MB-12222: improved mnAdminServersService nodes filter

Change-Id: Ia56196c033ef37c1dc94d251b1452167ba6c0a04
Reviewed-on: http://review.couchbase.org/41907
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-12222: initial cluster settings UI

Change-Id: I4cbcaf92e33f70e6b0b97092af8ffa8d8620b72e
Reviewed-on: http://review.couchbase.org/41908
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-12222: initialize scopes after needed data have been retrieved

Change-Id: I4c53fdd686286af336faaeeb01942745780294db
Reviewed-on: http://review.couchbase.org/41981
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-12222: initial implementation mnHttpService

[alk@tut.by: changed message to rename WIP to "initial..."]

Change-Id: I68da3052d00579363600e6cd332c937241251840
Reviewed-on: http://review.couchbase.org/42058
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>